The Ohio River.
the ohio river
Mississippi, in the US
The river that is known as the Gateway to the West is the Missouri River. It flows into the Mississippi River at St. Louis, MO.
It was the starting point. The gateway to the west. The US ended at the banks of the Missouri River.
It is the gateway of the Mississippi River, the major shipping channel in the midwest.
The Mississippi River is the transportation artery that travels from north to south in the United States. It is one of the longest rivers in North America and a key transportation route for goods and commodities.
manifest destiny
No East US
You can cross the US by river only if you are going north to south (south to north is harder) but not if you are going east to west, or west to east.
Ohio River Actually, the Ohio River flows to the Southwest... rather than "due" West...
Arkansas
The long river that is the border between the east and West United States is the Mississippi River. The Mississippi is the longest river in the United States.